How to Start an ABA Company: A Step-by-Step Guide

Starting an ABA practice is a clinical project and a small-business project at the same time, and most BCBAs who try it are trained for only one of them. This guide lays out how to start an ABA company in the order the steps tend to depend on each other: decide the model, form the entity, get your identifiers, get into payer networks, hire and train, and fund the gap between delivering services and getting paid.

A word on honesty. Costs, credentialing timelines and licensure rules differ by state and by payer, and they change. Where a figure is published by an authority and we could verify it, I give it with its source. Where it is not, I explain how to estimate it for your market rather than quote a number that would be wrong for you. This is general information, not legal, tax or financial advice; use an attorney and an accountant who know healthcare in your state.

Step 1: Decide the shape of the practice before you file anything

Write down five decisions. Each one changes your costs and your timeline.

• Setting. In-home, clinic-based, school-based, or a mix. Clinic-based means a lease, build-out and insurance for premises. In-home means travel and scheduling complexity.
• Population and age range. Early intervention, school-age, or adults. This affects which payers you will rely on.
• Payer mix. Commercial insurance, state Medicaid, school contracts, private pay, or a blend. Each has different paperwork and payment behavior.
• Services. Direct treatment only, or also assessment, parent training and group.
• Your role. Will you carry a caseload, or lead clinically and manage? Early on, the founder usually does both, and that limits growth.

Also check your state's rules on who may deliver and supervise ABA. Some states license behavior analysts, some regulate through other channels, and the rules for where services can be delivered vary. Start with your state licensing board and the Medicaid agency, because those are the authorities, not blogs.

Step 2: Form the legal entity and the basics

Most practices operate as an LLC or a corporation rather than as a sole proprietor, because it separates business liability from personal assets. Some states require professional entities (such as a PLLC or professional corporation) for licensed professions, and rules differ on who may own what. That is a state-law question for an attorney. The basic sequence:

1. Register the entity with your state. Filing fees and annual report fees are set by each state; look up your state's schedule rather than relying on a national average.
2. Get an EIN from the IRS. The IRS states that you can get one "directly from the IRS in minutes for free" and that "you never have to pay a fee for an EIN"; beware websites that charge (IRS, irs.gov, checked November 2, 2026).
3. Open a business bank account and keep practice money separate from personal money from day one.
4. Get insurance. Professional liability, general liability, workers' compensation where required, and cyber coverage are the usual categories. Get quotes from a broker who works with healthcare providers. Premiums depend on your state, size and services.
5. Handle licensing and local requirements. Business licenses, zoning for a clinic, and any state facility or provider licensing.

Step 3: Get your NPI and set up credentialing profiles

An NPI is the National Provider Identifier used on claims. According to CMS, health care providers pay nothing to apply for and be assigned an NPI, and the application is through NPPES. CMS describes a Type 2 NPI as the identifier for health care organizations, and organizations can have multiple NPIs (CMS NPI fact sheet, cms.gov). In practice you will want an individual NPI for each billing clinician and an organizational NPI for the practice. The right structure depends on how you contract with payers, so confirm with the payers you are targeting.

Many payers use CAQH ProView for provider credentialing data. Several payer and CAQH guides state that the system is free for individual providers, with periodic re-attestation required. Fill it in early and keep it current, because stale CAQH data is a common cause of delay.

Step 4: Get contracted with payers

This is the longest and least controllable step, and it determines when you can bill. For each payer you target:

1. Find the provider network application and the payer's ABA-specific requirements. Some payers manage ABA through a separate behavioral health vendor, and some are not accepting new ABA providers in certain areas.
2. Submit the credentialing application with your entity documents, NPIs, licenses, BACB certification, insurance certificates and CAQH access.
3. Review the contract before signing: the fee schedule per code, the authorization process, timely filing limits, the claim submission method and what happens on audit or recoupment.
4. Ask for the effective date in writing. Services delivered before the effective date are generally not payable, so do not start seeing that payer's members until you know it.

Do not assume a timeline. Ask each payer directly how long credentialing takes at present and treat any number as an estimate. Because the wait can be long, many new practices start with one or two payers and add more, or begin with private pay or contracts while credentialing proceeds. Medicaid is its own path: states set their own enrollment, provider type and rate rules, so go to your state Medicaid agency's provider enrollment page.

Understand coverage as well. State mandates for autism coverage and the rules of self-funded employer plans vary, and every plan has its own authorization process. Read the payer's ABA policy before you promise a family anything.

Step 5: Staffing and training

Your clinical team is BCBAs (and possibly BCaBAs) who design and supervise, and technicians who deliver most direct hours. Hiring RBTs has a particular structure from the BACB, whose requirements you should read directly on bacb.com:

• An RBT applicant must complete a 40-hour training and a competency assessment, and the BACB's materials describe updated requirements applying from January 1, 2026 (BACB, Guidance for Meeting RBT Requirements During the 2026 Transition, updated 08/2025).
• Per the BACB RBT Handbook (updated 10/2026), RBTs must be supervised for at least 5 percent of the hours they spend providing services each month, including two face-to-face contacts. Plan your BCBA capacity around that. See our RBT supervision log template for what to record.
• Plan hiring and onboarding timelines around the BACB application process, and read the handbook for what a new hire may and may not do before certification.

The practical implication is that every additional RBT requires BCBA time you must fund. When you decide how many technicians one BCBA can support, you are making both a clinical and a financial decision, and you should make it deliberately.

Step 6: Compliance basics before the first client

• HIPAA. As a covered entity you need written policies, a risk analysis, staff training, and business associate agreements with vendors that handle patient data. The HHS Office for Civil Rights publishes the rules at hhs.gov.
• Consent and intake documents. Service agreement, financial policy, consent to treat, release forms.
• Clinical documentation standards. A note format, treatment plan format and report schedule. See our ABA session notes examples and treatment plan template.
• Employment rules. Hourly versus salaried classification, overtime, travel time between sessions, and payroll taxes are set by federal and state law. Ask an accountant.
• Ethics and supervision policies. Written policies on boundaries, mandated reporting, restrictive procedures and crisis response.

Step 7: Understand the cash gap

A practice can deliver good care and still run short of cash. They fail because they pay staff every two weeks and get paid by insurers weeks or months later, while a denied claim can delay money further. Your first-year plan has to cover that gap.

Here is how to estimate it for yourself without a borrowed number. Fill in these inputs from quotes and your own contracts:

Input	How to get it
Hourly cost of an RBT, fully loaded	Pay rate plus employer payroll taxes plus any benefits, from your accountant
Payer reimbursement per billable hour	The fee schedule in each contract, by code
Billable hours per RBT per week	Your schedule less cancellations, training and drive time, which you estimate from your model
Days from service to payment	Ask each payer for typical turnaround, then add your own claim delay
Non-billable hours	Supervision, training, admin, from the BACB 5 percent minimum plus your own policies

The calculation: weekly cost of delivering a billable hour, times billable hours per week, times the number of weeks between delivering the service and receiving payment, is the cash you must carry. Illustration with round numbers chosen only to show the arithmetic, not typical costs: if a clinic's weekly cost of delivery is 10,000 and payment arrives eight weeks after service, the practice must finance about 80,000 before the first payment arrives, plus the fixed costs that continue regardless. Run your own inputs, and run them again at your pessimistic payer timeline.

Cost categories to budget, with how to estimate each

Category	What it includes	How to estimate
Formation and licensing	State filing, registered agent, business license, professional licenses	State fee schedules; free EIN and NPI
Legal and accounting	Entity advice, contract review, bookkeeping, payroll setup	Quotes from two providers who serve healthcare
Insurance	Professional and general liability, workers' comp, cyber	Broker quotes
Space and equipment	Lease, build-out, furniture, materials, tablets	Local listings and vendor quotes; skip if home-based at first
Software	Scheduling, data, notes, billing, communication	Published prices where vendors list them, demos otherwise; compare per-user and per-client pricing models
Staffing before revenue	Pay for the people who onboard, train and are supervised before billing starts	Fully loaded wage times the weeks of ramp-up
Marketing and referral development	Website, outreach to pediatricians and schools	Decide a monthly budget you can sustain
Working capital	The payment gap in Step 7	The calculation above
Contingency	Denials, turnover, a delayed payer contract	Set a reserve you can name

For software pricing, our comparison of per-user and per-client pricing shows how the model changes the bill as you grow.

Step 8: Choose your systems early

You will need scheduling, data collection, session notes, billing and a way to manage staff credentials and supervision hours. You do not need to buy everything on day one, but changing systems after you have a caseload is expensive in time. Look for tools priced so that early months with a few clients do not overload your budget. Wilma's software for small practices and practice management pages describe her scope honestly: she tracks when staff credentials expire, but she does not do credentialing with payers; she captures insurance at intake but does not check eligibility; and she tracks payroll but does not run it. Plan those functions separately.

A realistic order of operations

1. Decide model, setting and payer mix; check state rules.
2. Form the entity, get the EIN, open the bank account, buy insurance.
3. Get NPIs and complete CAQH.
4. Start payer applications immediately, since they take the longest.
5. Build policies, forms, templates and your systems while you wait.
6. Hire and onboard your first RBTs close to the date you expect to start billing, not months earlier.
7. Start with a small caseload you can supervise well, and grow it as your cash and clinical capacity allow.